{"id":509,"date":"2018-09-01T21:09:15","date_gmt":"2018-09-01T18:09:15","guid":{"rendered":"https:\/\/blog.arcak.net\/?p=509"},"modified":"2018-09-01T22:26:29","modified_gmt":"2018-09-01T19:26:29","slug":"vsan-fault-domain","status":"publish","type":"post","link":"https:\/\/blog.arcak.net\/index.php\/2018\/09\/01\/vsan-fault-domain\/","title":{"rendered":"VMware vSAN Fault Domain"},"content":{"rendered":"

Bu yaz\u0131mda vSAN<\/strong>\u00a0Fault Domain<\/strong> konusunu a\u00e7\u0131klayaca\u011f\u0131m. \u00d6zg\u00fcn kayna\u011f\u0131 buradan<\/strong><\/a> inceleyebilirsiniz.<\/p>\n

Fault domain<\/strong> mekanizmas\u0131 vSAN<\/strong> k\u00fcmesini birden \u00e7ok kabinet ya da blade \u015fasiler \u00fczerinde yayarak, ayn\u0131 anda birden \u00e7ok sunucu ar\u0131zas\u0131 ya da bir kabinetin tamamen eri\u015filemedi\u011fi durumlarda sistemlerin \u00e7al\u0131\u015fmas\u0131na olanak sa\u011flar. Her bir Fault Domain<\/strong>‘e bir ya da birden fazla sunucu eklenebilir.<\/p>\n

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vSAN<\/strong> k\u00fcmesindeki Primary level of failures to tolerate (PFTT)\u00a0<\/strong>politikas\u0131, sanal makinenin tolare edebilece\u011fi hatalar\u0131n say\u0131s\u0131na ba\u011fl\u0131d\u0131r. PFTT=1<\/strong> olarak tan\u0131mland\u0131\u011f\u0131nda, vSAN<\/strong> Fault<\/strong>\u00a0Domain<\/strong> i\u00e7erisindeki herhangi tekil hatay\u0131 (\u00d6r. t\u00fcm kabinete eri\u015fimin kesilmesi)<\/strong> tolare edebilmektedir.<\/p>\n

Fault Domain<\/strong>‘ler yap\u0131land\u0131r\u0131l\u0131p sanal sunucu olu\u015fturuldu\u011funda, vSAN,<\/strong> replika, witness gibi koruma \u00f6\u011felerinin farkl\u0131 Fault Domain<\/strong>‘lerde sakland\u0131\u011f\u0131ndan emin olur. E\u011fer depolama bazl\u0131 politika PFTT=n<\/strong> ise, vSAN<\/strong> en az 2n+1<\/strong> say\u0131da Fault Domain<\/strong>‘e ihtiya\u00e7 duyar. E\u011fer vSAN\u00a0<\/strong>k\u00fcmesindeki sanal makineler Fault Domain<\/strong> politikas\u0131n\u0131 kullan\u0131yorlarsa, ilgili sanal makine nesneleri farkl\u0131 kabinetlerde tutulur.<\/p>\n

\u00dc\u00e7 node i\u00e7eren vSphere<\/strong> k\u00fcmesi ile ayn\u0131 \u015fekilde PFTT=1<\/strong> sa\u011flanabilmesi i\u00e7in min<\/strong>. 3 adet (2*1+1) Fault Domain<\/strong> ihtiyac\u0131 vard\u0131r.<\/p>\n

Bir kabinete tamamen eri\u015filemedi\u011fi durumda, y\u00fcksek oranda donan\u0131m kayna\u011f\u0131 yitirilir, bu etkiyi en aza indirmek i\u00e7in k\u00fc\u00e7\u00fck boyutlarda Fault Domain<\/strong>‘ler\u00a0olu\u015fturulmas\u0131 \u00f6nerilir.<\/p>\n

Fault domain<\/strong>‘ler ile \u00e7al\u0131\u015f\u0131l\u0131rken a\u015fa\u011f\u0131daki Best Practise ilkeleri takip edilmelidir;<\/p>\n